Flexible Tools Mod 1.12.2/1.11.2 (Crazy Upgradeable Tools)

Flexible Tools Mod 1.12.2 adds 5 tools and different upgrades to improve said tools: Flexible Sword, Flexible Pickaxe, Flexible Axe, Flexible Shovel, Flexible Axpickvel. They are nearly as strong as diamond tools. To open the tool GUI press G while holding the tool. They can be repaired with gold, diamond, and obsidian. The upgrades have tooltips and should be intuitive to use: